The Racers Choice: Permanently seals leaking head gaskets, cracked heads and blocks (aluminum or cast iron) and coats the engine cooling system to prevent rust and salt water corrosion. Ceramic Motor Seal seals porous castings in the coolant system, stops coolant leaks and promotes head dissipation for added power. Anti-freeze must be removed prior to using this product. [Use 9120-16 outside Canada)
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